TECHNOLOGY | MELT FILTRATION
Right: Non- stop Filter from BB Engineering
polymer and contamination via hydrolysis. A quick switch over between produc- tion and cleaning reduces man- power to a minimum and guarantees reliable availability of the filtration.”
Finer filtration Gneuss, the family-owned melt filtration specialist based in Bad Oeynhausen, Germany, has retrofit- ted its melt filtration systems to a large number of existing LDPE/ LLDPE recycling extrusion lines. The company said it can offer complete retrofit packages consist- ing of a filtration system, melt pump, and integrated control system, to maintain ease of operation with minimal disruption. Gneuss – which marked its 40th anniversary with a two-day event last November – recently worked with Spanish waste management specialist Llorens GMR, which mainly deals with the collection and preparation of industrial waste. As part of its operation, the Barcelona-based company has a relatively new extrusion line for reprocessing post-industrial LDPE and LLDPE waste film. However, the original equipment was unable to remove enough critical contaminants, so Llorens decided to add an RSFgenius melt filtration system to filter out impurities down to 56-100 µm. The Gneuss system achieves this at a constant melt pressure, ensuring that gels and black specks are removed on a consistent basis, meaning Llorens can use the material produced on this line for high value cast and blown film applications. Gneuss describes the RSFgenius as its most sought-after model. It operates with an integrated back-flushing system offering self-cleaning for very demanding applications and highest quality requirements. Screens can be re-used up to 400
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in Your Packaging Production
with a one-time investment in the BKG® HiCon™ K-SWE-HD/RS
sales-bkg@nordsonpolymerprocessing.com
sales-bkg@nordsonpolymerprocessing.com
times and filtration finenesses below 10 µm (1200 mesh) are available.
At the NPE Plastics show in
Florida, US, this coming May, the company said it will display an RSFgenius 150 with an active screen area of 450 cm² (70 sq in), for throughput of 1,000 kg/h (2,200 lbs) of rPET with a filtration fineness of 75 µm (200 mesh). There will also be an SFneos and a KSF model on display.
These filter series also operate continuously but do not offer backflushing, so are better suited for applications that don’t require self-cleaning. The SFneos series
operates automatically and is suitable for a wide range of applications including foam sheet, battery separator film, or PVC, and is characterised by a large active screen surface area and compact design, as well as providing extremely easy and safe operation. The KSF series is designed specifi- cally for applications with frequent material type, grade, or colour changes, as well as for high pressure applications like blown film. On this model the screen changers are compact and offer excellent value for money while permitting quick and easy functionality.
EPS solution Late last year, US-based advanced materials provider Epsilyte entered into a strategic partner- ship with Italian company Fimic, which specialises in the design and manufacture of automatic and self-cleaning screen changers and will now be responsible for supplying equipment to improve the quality and efficiency of Epsilyte’s expanded polystyrene (EPS) recycling solutions. Fimic’s equipment filters recycled EPS, addressing the
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IMAGE: BB ENGINEERING
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